MCQ Collection
MDCAT 2026 MCQs
Practice MDCAT 2026 questions with answers and explanations.
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Correct Answer: C. Its density remains effectively constant
Explanation:
Fluid motion follows force balance and conservation principles.
The stated explanation matches the described flow condition.
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Correct Answer: C. 200 J
Explanation:
For constant pressure, work done by the gas is PΔV.
Substitution gives the stated value.
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Correct Answer: D. Velocity at each fixed point does not change with time
Explanation:
Fluid motion follows force balance and conservation principles.
The stated explanation matches the described flow condition.
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Correct Answer: D. 450 J
Explanation:
For constant pressure, work done by the gas is PΔV.
Substitution gives the stated value.
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Correct Answer: A. 12 m/s
Explanation:
Wave speed equals frequency multiplied by wavelength.
Using v=fλ gives the stated result.
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Correct Answer: A. 400 J
Explanation:
For constant pressure, work done by the gas is PΔV.
Substitution gives the stated value.
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Correct Answer: B. 8 m/s
Explanation:
Wave speed equals frequency multiplied by wavelength.
Using v=fλ gives the stated result.
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Correct Answer: B. The gas constant R
Explanation:
Thermodynamic quantities describe heat, work and internal energy.
The selected statement follows their definitions and the first law.
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Correct Answer: C. 10 m/s
Explanation:
Wave speed equals frequency multiplied by wavelength.
Using v=fλ gives the stated result.
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Correct Answer: C. Higher temperature to lower temperature
Explanation:
Thermodynamic quantities describe heat, work and internal energy.
The selected statement follows their definitions and the first law.
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Correct Answer: D. 34 m/s
Explanation:
Wave speed equals frequency multiplied by wavelength.
Using v=fλ gives the stated result.
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Correct Answer: D. Conservation of energy
Explanation:
Thermodynamic quantities describe heat, work and internal energy.
The selected statement follows their definitions and the first law.